Chemistry of inorganic compounds – Miscellaneous process
Patent
1988-10-20
1989-10-03
Doll, John
Chemistry of inorganic compounds
Miscellaneous process
4232451, 4232453, 423304, 423415A, C01B 2512
Patent
active
048715263
ABSTRACT:
A method of catalytic oxidation of organophosphonate esters includes introducing the organophosphonate esters in gaseous form into contact with a molybdenum catalyst and effecting such introduction in the presence of oxygen to cause the organophosphonate ester to be oxidized on the molybdenum catalyst surface. The process is preferably carried out at a temperature of at least 900.degree. K. in the presence of excess oxygen. A chemisorbed oxide coating or molybdenum oxide coating or both may be established on all or part of the molybdenum catalyst. Among the organophosphonate esters which may be oxidized in this manner are dimethyl methylphosphonate, diisopropyl methylphosphonate, diphenyl methylphosphonate, and other molecules with the structure: ##STR1## The catalytic oxidation results in emission of carbon monoxide and phosphorus oxides(s) without undesired buildup of carbonaceous or phosphorus overlayers on the Mo catalyst surface.
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The Surface Chemistry of Organo-phosphorous Compounds (6/15/87), J. G. Ekt, K. J. Klabunde, J. R. Shapley, J. M. White and J. T. Yates, Jr.
Hagans Patrick L.
Smentkowski Vincent S.
Yates, Jr. John T.
Doll John
Langel Wayne A.
Silverman Arnold B.
University of Pittsburgh of the Commonwealth System of Higher Ed
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